Dreyfus BASIC Money Market Fund, Inc. Ticker DBAXX Dreyfus BASIC U.S. Government Money Market Fund Ticker DBGXX

Transcription

1 Dreyfus BASIC Money Market Fund, Inc. Ticker DBAXX Dreyfus BASIC U.S. Government Money Market Fund Ticker DBGXX PROSPECTUS July 1, 2010 As with all mutual funds, the Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

2 September 1, 2010 DREYFUS BASIC MONEY MARKET FUND, INC. DREYFUS BASIC U.S. GOVERNMENT MONEY MARKET FUND Supplement to Prospectus dated July 1, 2010 The following information supersedes any contrary information contained in the section of the fund s prospectus entitled Shareholder Guide Buying and Selling Shares : The fund generally calculates its NAV at 5:00 p.m. on days that the New York Stock Exchange, or the transfer agent (as on Good Friday) is open for regular business. Orders in proper form placed prior to 5:00 p.m., and payments for which are received in or converted to Federal Funds by the fund s custodian by 6:00 p.m., will be effective at the price determined at 5:00 p.m. on that day, and shares purchased will receive the dividend declared on that day S0910

3 Contents Fund Summary Dreyfus BASIC Money Market Fund, Inc. 1 Dreyfus BASIC U.S. Government Money Market Fund 5 Fund Details Goal and Approach 8 Investment Risks 10 Management 12 Shareholder Guide Buying and Selling Shares 13 Distributions and Taxes 17 Services for Fund Investors 18 Financial Highlights 20 For More Information See back cover.

4 Dreyfus BASIC Money Market Fund, Inc. Fund Summary INVESTMENT OBJECTIVE The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity. FEES AND EXPENSES This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. Shareholder fees (fees paid directly from your investment if your account balance is less than $50,000) Exchange fee $5.00 Account closeout fee $5.00 Wire and Dreyfus TeleTransfer redemption fee $5.00 Checkwriting charge $2.00 Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) Management fees 0.50% Other expenses (including shareholder services fee)* 0.12% Total annual fund operating expenses 0.62% Fee waiver and/or expense reimbursement (0.17)% Total annual fund operating expenses (after fee waiver and/or expense reimbursement) 0.45% *Amounts do not reflect the fee paid by the fund to the U.S. Treasury Department in connection with the fund s participation under the Treasury Department s Temporary Guarantee Program for Money Market Funds (the Program). If the Program fee had been reflected, Other expenses would have been 0.16% and Total annual fund operating expenses would have been 0.66%. These fees would have reflected the fund s participation in the Program for the period from December 19, 2008 through September 30, 2009 (the termination date of the fund s participation in the Program). The Dreyfus Corporation has agreed contractually to waive receipt of its fees and/or assume the expenses of the fund so that total annual fund operating expenses do not exceed 0.45%. Dreyfus may terminate the agreement upon at least 90 days prior notice to investors, but has committed not to do so until at least July 1, EXAMPLE The Example below is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund s operating expenses remain the same. The one-year example and the first year of the three-, five- and ten-years examples are based on net operating expenses, which reflect the expense waiver/reimbursement by Dreyfus. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 1 Year 3 Years 5 Years 10 Years $46 $181 $329 $758 1

5 PRINCIPAL INVESTMENT STRATEGY As a money market fund, the fund is subject to maturity, quality, liquidity and diversification requirements designed to help it maintain a stable share price of $1.00. To pursue its goal, the fund invests in a diversified portfolio of high quality, short-term, dollar-denominated debt securities, including securities issued or guaranteed as to principal and interest by the U.S. government or its agencies or instrumentalities; certificates of deposit, time deposits, bankers acceptances and other short-term securities issued by domestic or foreign banks or thrifts or their subsidiaries or branches; repurchase agreements, including tri-party agreements; asset-backed securities; domestic and dollar-denominated foreign commercial paper and other short-term corporate obligations, including those with floating or variable rates of interest; and dollar-denominated obligations issued or guaranteed by one or more foreign governments or any of their political subdivisions and agencies. Normally, the fund invests at least 25% of its net assets in domestic or dollar-denominated foreign bank obligations. PRINCIPAL RISKS An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. Although the fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the fund. The fund s yield will fluctuate as the short-term securities in its portfolio mature and the proceeds are reinvested in securities with different interest rates. Additionally, while the fund has maintained a constant share price since inception, and will continue to try to do so, neither Dreyfus nor its affiliates are required to make a capital infusion, enter into a capital support agreement or take other actions to prevent the fund s share price from falling below $1.00. The following are the principal risks that could reduce the fund s income level and/or share price: Interest rate risk. This risk refers to the decline in the prices of fixed-income securities that may accompany a rise in the overall level of interest rates. A sharp and unexpected rise in interest rates could cause a money market fund s share price to drop below a dollar. Credit risk. Failure of an issuer to make timely interest or principal payments, or a decline or perception of a decline in the credit quality of a security, can cause the security s price to fall, potentially lowering the fund s share price. The credit quality of the securities held by the fund can change rapidly in certain market environments, and the default of a single holding could have the potential to cause significant deterioration of the fund s net asset value. Liquidity risk. When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities at or near their perceived value. In such a market, the value of such securities may fall dramatically, potentially lowering the fund s share price, even during periods of declining interest rates. Also, during such periods, redemptions by a few large investors in the fund may have a significant adverse effect on the fund s net asset value and remaining fund shareholders. Banking industry risk. The risks generally associated with concentrating investments in the banking industry, such as interest rate risk, credit risk, and regulatory developments relating to the banking industry. Foreign investment risk. The risks generally associated with dollar-denominated foreign investments, such as economic and political developments, seizure or nationalization of deposits, imposition of taxes or other restrictions on payment of principal and interest. Government securities risk. Not all obligations of the U. S. government, its agencies and instrumentalities are backed by the full faith and credit of the U.S. Treasury. Some obligations are 2

6 backed only by the credit of the issuing agency or instrumentality, and in some cases there may be some risk of default by the issuer. Any guarantee by the U.S. government or its agencies or instrumentalities of a security held by the fund does not apply to the market value of such security or to shares of the fund itself. U.S. Treasury securities risk. A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity, but the market prices for such securities are not guaranteed and will fluctuate. Counterparty risk. The risk that a counterparty in a repurchase agreement could fail to honor the terms of its agreement. PERFORMANCE The bar chart and table shown illustrate the risks of investing in the fund. The bar chart shows changes in the performance of the fund s shares from year to year. The table shows the average annual total returns of the fund s shares over time. The fund s past performance (before and after taxes) is no guarantee of future results. More recent performance information may be available at Year-by-year total returns as of 12/31 each year (%) Best Quarter (Q4, 2000) 1.58%. Worst Quarter (Q4, 2009) 0.00% The fund s year-to-date total return as of 3/31/10 was 0.00% Average annual total returns (as of 12/31/09) 1 Year 5 Years 10 Years 0.32% 3.10% 2.92% For the fund s current yield, call toll-free PORTFOLIO MANAGEMENT The fund s investment adviser is The Dreyfus Corporation. PURCHASE AND SALE OF FUND SHARES In general, the minimum initial investment is $25,000 and the minimum subsequent investment is $1,000. You may sell your shares on any business day by calling or by visiting You may also mail your request to sell shares to The Dreyfus Family of Funds, P.O. Box 55263, Boston, MA

7 TAX INFORMATION Dividends and other distributions paid by the fund are subject to federal income tax, and may be subject to state and local taxes, except when your investment is through an IRA, 401(k) plan or other taxadvantaged investment plan. PAYMENTS TO BROKER-DEALERS AND OTHER FINANCIAL INTERMEDIARIES If you purchase shares through a broker-dealer or other financial intermediary (such as a bank), the fund and its related companies may pay the intermediary for the sale of fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the fund over another investment. Ask your salesperson or visit your financial intermediary s website for more information. 4

8 Fund Summary Dreyfus BASIC U.S. Government Money Market Fund INVESTMENT OBJECTIVE The fund seeks as high a level of current income as is consistent with preservation of capital and the maintenance of liquidity. FEES AND EXPENSES This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. Shareholder fees (fees paid directly from your investment if your account balance is less than $50,000) Exchange fee $5.00 Account closeout fee $5.00 Wire and Dreyfus TeleTransfer redemption fee $5.00 Checkwriting charge $2.00 Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) Management fees 0.50% Other expenses (including shareholder services fee)* 0.16% Total annual fund operating expenses 0.66% Fee waiver and/or expense reimbursement (0.21)% Total annual fund operating expenses (after fee waiver and/or expense reimbursement) 0.45% *Amounts do not reflect the fee paid by the fund to the U.S. Treasury Department in connection with the fund s participation under the Treasury Department s Temporary Guarantee Program for Money Market Funds (the Program). If the Program fee had been reflected, Other expenses would have been 0.17% and Total annual fund operating expenses would have been 0.67%. These fees would have reflected the fund s participation in the Program for the period from December 19, 2008 through September 30, 2009 (the termination date of the fund s participation in the Program). The Dreyfus Corporation has agreed contractually to waive receipt of its fees and/or assume the expenses of the fund so that total annual fund operating expenses do not exceed 0.45%. Dreyfus may terminate the agreement upon at least 90 days prior notice to investors, but has committed not to do so until at least July 1, EXAMPLE The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund s operating expenses remain the same. The one-year example and the first year of the three-, five- and ten- years examples are based on net operating expenses, which reflect the expense waiver/reimbursement by Dreyfus. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 1 Year 3 Years 5 Years 10 Years $46 $190 $347 $803 5

9 PRINCIPAL INVESTMENT STRATEGY As a money market fund, the fund is subject to maturity, quality, and liquidity diversification requirements designed to help it maintain a stable share price of $1.00. To pursue its goal, the fund invests in securities issued or guaranteed as to principal and interest by the U.S. government or its agencies or instrumentalities, and repurchase agreements (including tri-party repurchase agreements). The securities in which the fund invests include those backed by the full faith and credit of the U.S. government and those that are neither insured nor guaranteed by the U.S. government. PRINCIPAL RISKS An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. Although the fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the fund. The fund s yield will fluctuate as the short-term securities in its portfolio mature and the proceeds are reinvested in securities with different interest rates. Additionally, while the fund has maintained a constant share price since inception, and will continue to try to do so, neither The Dreyfus Corporation nor its affiliates are required to make a capital infusion, enter into a capital support agreement or take other actions to prevent the fund s share price from falling below $1.00. The following are the principal risks that could reduce the fund s income level and/or share price: Interest rate risk. This risk refers to the decline in the prices of fixed-income securities that may accompany a rise in the overall level of interest rates. A sharp and unexpected rise in interest rates could cause a money market fund s share price to drop below a dollar. U.S. Treasury securities risk. A security backed by the U.S. Treasury of the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity, but the market prices for such securities are not guaranteed and will fluctuate. Government securities risk. Not all obligations of the U. S. government, its agencies and instrumentalities are backed by the full faith and credit of the U.S. Treasury. Some obligations are backed only by the credit of the issuing agency or instrumentality, and in some cases there may be some risk of default by the issuer. Any guarantee by the U.S. government or its agencies or instrumentalities of a security held by the fund does not apply to the market value of such security or to shares of the fund itself. Liquidity risk. When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities at or near their perceived value. In such a market, the value of such securities may fall dramatically, potentially lowering the fund s share price, even during periods of declining interest rates. Also, during such periods, redemptions by a few large investors in the fund may have a significant adverse effect on the fund s net asset value and remaining fund shareholders. Counterparty risk. The risk that a counterparty in a repurchase agreement could fail to honor the terms of its agreement. PERFORMANCE The bar chart and table shown illustrate the risks of investing in the fund. The bar chart shows changes in the performance of the fund s shares from year to year. The table shows the average annual total returns of the fund s shares over time. The fund s past performance (before and after taxes) is no guarantee of future results. More recent performance information may be available at 6

10 Year-by-year total returns as of 12/31 each year (%) Best Quarter (Q3, 2000) 1.54%. Worst Quarter (Q4, 2009) 0.00% The fund s year-to-date total return as of 3/31/10 was 0.00% Average annual total returns (as of 12/31/09) 1 Year 5 Years 10 Years 0.12% 2.87% 2.76% For the fund s current yield, call toll-free: PORTFOLIO MANAGEMENT The fund s investment adviser is The Dreyfus Corporation. PURCHASE AND SALE OF FUND SHARES In general, the minimum initial investment is $25,000 and the minimum subsequent investment is $1,000. You may sell your shares on any business day by calling or by visiting You may also mail your request to sell shares to The Dreyfus Family of Funds, P.O. Box 55263, Boston, MA TAX INFORMATION Dividends and other distributions paid by the fund are subject to federal income tax, and may be subject to state and local taxes, except when your investment is through an IRA, 401(k) plan or other taxadvantaged investment plan. PAYMENTS TO BROKER-DEALERS AND OTHER FINANCIAL INTERMEDIARIES If you purchase shares through a broker-dealer or other financial intermediary (such as a bank), the fund and its related companies may pay the intermediary for the sale of fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the fund over another investment. Ask your salesperson or visit your financial intermediary s website for more information. 7

11 Fund Details GOAL AND APPROACH Each fund is a money market mutual fund with a separate investment portfolio. The operations and results of one fund are unrelated to those of the other fund. This combined prospectus has been prepared for the convenience of investors so that investors can consider two investment choices in one document. Each fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity. As a money market fund, each fund is subject to the maturity, liquidity, quality and diversification requirements of Rule 2a-7 under the Investment Company Act of 1940, as amended, which are designed to help money market funds maintain a stable share price. Each fund is required to hold at least 30% of its assets in cash, U.S. Treasury securities, certain other government securities with remaining maturities of 60 days or less, or securities that can readily be converted into cash within five business days. In addition, each fund is required to hold at least 10% of its assets in cash, U.S. Treasury securities, or securities that can readily be converted into cash within one business day. The maximum weighted average maturity of each fund s portfolio is 60 days and the maximum weighted average life to maturity of each fund s portfolio is 120 days. Each fund purchases securities with the highest credit rating only, or the unrated equivalent. While each fund generally invests solely in securities with the highest credit rating or the unrated equivalent as determined by Dreyfus, it may invest up to 3% of its assets in securities with the second-highest credit rating that mature in 45 days or less. The main difference between the funds is the securities in which they invest. Dreyfus BASIC Money Market Fund invests in a range of high quality money market instruments. Dreyfus BASIC U.S. Government Money Market Fund invests only in U.S. government securities and in repurchase agreements. Throughout this prospectus, references to the fund apply to all funds, unless otherwise noted. Dreyfus BASIC Money Market Fund To pursue its goal, the fund invests in a diversified portfolio of high-quality, dollar-denominated shortterm debt securities, including: securities issued or guaranteed as to principal and interest by the U.S. government or its agencies or instrumentalities certificates of deposit, time deposits, bankers acceptances and other short-term securities issued by domestic or foreign banks or thrifts or their subsidiaries or branches repurchase agreements, including tri-party repurchase agreements asset-backed securities domestic and dollar-denominated foreign commercial paper, and other short-term corporate obligations, including those with floating or variable rates of interest dollar-denominated obligations issued or guaranteed by one or more foreign governments or any of their political subdivisions and agencies 8

12 Normally, the fund invests at least 25% of its net assets in domestic or dollar-denominated foreign bank obligations. Dreyfus BASIC U.S. Government Money Market Fund To pursue its goal, the fund invests in securities issued or guaranteed as to principal and interest by the U.S. government or its agencies or instrumentalities, and repurchase agreements (including tri-party repurchase agreements). The securities in which the fund invests include those backed by the full faith and credit of the U.S. government and those that are neither insured nor guaranteed by the U.S. government. U.S. government securities are generally considered to be among the highest-quality investments available. By investing in these securities, the fund seeks greater credit safety for investors. In exchange for the level of credit safety offered by U.S. government securities, the fund s yield may be lower than the yield of money market funds that do not limit their investments to U.S. government securities. 9

13 INVESTMENTS RISKS An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. Although the fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the fund. The fund s yield will fluctuate as the short-term securities in its portfolio mature and the proceeds are reinvested in securities with different interest rates. Additionally, while the fund has maintained a constant share price since inception, and will continue to try to do so, neither Dreyfus nor its affiliates are required to make a capital infusion, enter into a capital support agreement or take other actions to prevent the fund s share price from falling below $1.00. The following are the principal risks that could reduce the fund s income level and/or share price: Interest rate risk. This risk refers to the decline in the prices of fixed-income securities that may accompany a rise in the overall level of interest rates. The fund s yield will vary; it is not fixed for a specific period like the yield on a bank certificate of deposit. A sharp and unexpected rise in interest rates could cause a money market fund s share price to drop below a dollar. However, the extremely short maturities of the securities held in money market portfolios - a means of achieving an overall fund objective of principal safety - reduces their potential for price fluctuation. A low interest rate environment may prevent the fund from providing a positive yield or paying fund expenses out of fund assets and could impair the fund s ability to maintain a stable net asset value. Liquidity risk. When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities at or near their perceived value. In such a market, the value of such securities may fall dramatically, potentially lowering the fund s share price, even during periods of declining interest rates. Also, during such periods, redemptions by a few large investors in the fund may have a significant adverse effect on the fund s net asset value and remaining fund shareholders. Government securities risk. Not all obligations of the U.S. government, its agencies and instrumentalities are backed by the full faith and credit of the U.S. Treasury. Some obligations are backed only by the credit of the issuing agency or instrumentality, and in some cases there may be some risk of default by the issuer. Any guarantee by the U.S. government or its agencies or instrumentalities of a security held by the fund does not apply to the market value of such security or to shares of the fund itself. In addition, because many types of U.S. government securities trade actively outside the United States, their prices may rise and fall as changes in global economic conditions affect the demand for these securities. U.S. Treasury securities risk. A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity, but the market prices for such securities are not guaranteed and will fluctuate. Because U.S. Treasury securities trade actively outside the United States, their prices may rise and fall as changes in global economic conditions affect the demand for these securities. Counterparty risk. The fund is subject to the risk that a counterparty in a repurchase agreement could fail to honor the terms of its agreement. Dreyfus BASIC Money Market Fund Credit risk. Failure of an issuer to make timely interest or principal payments, or a decline or perception of a decline in the credit quality of a security, can cause the security s price to fall, potentially lowering the fund s share price. Although the fund invests only in high-quality debt securities, any of the fund s holdings could have its credit rating downgraded or could default. The 10

14 credit quality of the securities held by the fund can change rapidly in certain market environments, and the default of a single holding could have the potential to cause significant deterioration of the fund s net asset value. Banking industry risk. The risks generally associated with concentrating investments in the banking industry, such as interest rate risk, credit risk, and regulatory developments relating to the banking industry. Foreign investment risk. The risks generally associated with dollar-denominated foreign investments, such as economic and political developments, seizure or nationalization of deposits, imposition of taxes or other restrictions on payment of principal and interest. 11

15 MANAGEMENT The investment adviser for the fund is The Dreyfus Corporation (Dreyfus), 200 Park Avenue, New York, New York Founded in 1947, Dreyfus manages approximately $282 billion in 190 mutual fund portfolios. For the past fiscal year, Dreyfus BASIC Money Market Fund, Inc. and Dreyfus BASIC U.S. Government Money Market Fund each paid Dreyfus a management fee at the annual rate of 0.34% and 0.29%, respectively, of the fund s average daily net assets. A discussion regarding the basis for the board s approving each fund s management agreement with Dreyfus is available in the fund s semiannual report for the six months ended August 31, Dreyfus is the primary mutual fund business of The Bank of New York Mellon Corporation (BNY Mellon), a global financial services company focused on helping clients move and manage their financial assets, operating in 34 countries and serving more than 100 markets. BNY Mellon is a leading provider of financial services for institutions, corporations and high-net-worth individuals, providing asset and wealth management, asset servicing, issuer services, and treasury services through a worldwide client-focused team. BNY Mellon has more than $22.4 trillion in assets under custody and administration and $1.1 trillion in assets under management, and it services more than $11.8 trillion in outstanding debt. Additional information is available at The Dreyfus asset management philosophy is based on the belief that discipline and consistency are important to investment success. For each fund, Dreyfus seeks to establish clear guidelines for portfolio management and to be systematic in making decisions. This approach is designed to provide each fund with a distinct, stable identity. MBSC Securities Corporation (MBSC), a wholly owned subsidiary of Dreyfus, serves as distributor of the fund and for the other funds in the Dreyfus Family of Funds. Rule 12b-1 fees and shareholder services fees, as applicable, are paid to MBSC for financing the sale and distribution of fund shares and for providing shareholder account service and maintenance, respectively. Dreyfus or MBSC may provide cash payments out of its own resources to financial intermediaries that sell shares of funds in the Dreyfus Family of Funds or provide other services. Such payments are separate from any sales charges, 12b-1 fees and/or shareholder services fees or other expenses that may be paid by a fund to those intermediaries. Because those payments are not made by fund shareholders or the fund, the fund s total expense ratio will not be affected by any such payments. These payments may be made to intermediaries, including affiliates, that provide shareholder servicing, sub-administration, recordkeeping and/or sub-transfer agency services, marketing support and/or access to sales meetings, sales representatives and management representatives of the financial intermediary. Cash compensation also may be paid from Dreyfus or MBSC s own resources to intermediaries for inclusion of a fund on a sales list, including a preferred or select sales list or in other sales programs. These payments sometimes are referred to as revenue sharing. From time to time, Dreyfus or MBSC also may provide cash or non-cash compensation to financial intermediaries or their representatives in the form of occasional gifts; occasional meals, tickets or other entertainment; support for due diligence trips; educational conference sponsorships; support for recognition programs; and other forms of cash or non-cash compensation permissible under broker-dealer regulations. In some cases, these payments or compensation may create an incentive for a financial intermediary or its employees to recommend or sell shares of the fund to you. Please contact your financial representative for details about any payments they or their firm may receive in connection with the sale of fund shares or the provision of services to the fund. The fund, Dreyfus and MBSC have each adopted a code of ethics that permits its personnel, subject to such code, to invest in securities, including securities that may be purchased or held by the fund. Each code of ethics restricts the personal securities transactions of employees, and requires portfolio managers and other investment personnel to comply with the code s preclearance and disclosure procedures. The primary purpose of the respective codes is to ensure that personal trading by employees does not disadvantage any fund managed by Dreyfus or its affiliates. 12

16 Shareholder Guide BUYING AND SELLING SHARES Valuing Shares You pay no sales charges to invest in the fund. Your price for shares is the net asset value per share (NAV), which is generally calculated as of the close of trading on the NewYork Stock Exchange (usually 4:00 p.m. Eastern time) on days the exchange (or the fund's transfer agent with respect to Dreyfus BASIC Money Market Fund, Inc.) is open for regular business. Your order will be priced at the next NAV calculated after your order is received in proper form by the fund s transfer agent or other authorized entity. The fund s portfolio securities are valued at amortized cost, which does not take into account unrealized gains or losses. As a result, portfolio securities are valued at their acquisition cost, adjusted over time based on the discounts or premiums reflected in their purchase price. The fund uses the amortized cost method of valuation pursuant to Rule 2a-7 under the Investment Company Act of 1940 in order to be able to price its shares at $1.00 per share. In accordance with Rule 2a-7, the fund is subject to certain maturity, liquidity, quality and diversification requirements to help it maintain the $1.00 per share price. When calculating its NAV, the fund compares the NAV using amortized cost to its NAV using available market quotations or market equivalents, which generally are provided by an independent pricing service approved by the fund s board. The pricing service s procedures are reviewed under the general supervision of the board. How to Buy Shares By Mail Regular Accounts. To open a regular account, complete an application and mail it, together with a check payable to The Dreyfus Family of Funds, to: The Dreyfus Family of Funds P.O. Box Boston, MA To purchase additional shares in a regular account, mail a check payable to The Dreyfus Family of Funds (with your account number on your check), together with an investment slip, to: The Dreyfus Family of Funds P.O. Box 105 Newark, NJ By Mail -- IRA Accounts. To open an IRA account or make additional investments in an IRA account, be sure to specify the fund name and the year for which the contribution is being made. When opening a new account include a completed IRA application, and when making additional investments include an investment slip. Make checks payable to The Dreyfus Family of Funds, and mail to: The Bank of New York Mellon, Custodian P.O. Box Boston, MA Electronic Check or Wire. To purchase shares in a regular or IRA account by wire or electronic check, please call (outside the U.S ) for more information. Dreyfus TeleTransfer. To purchase additional shares in a regular or IRA account by Dreyfus TeleTransfer, which will transfer money from a pre-designated bank account, request the account service 13

17 on your application. Call us at (outside the U.S ) or visit to request your transaction. Automatically. You may purchase additional shares in a regular or IRA account by selecting one of Dreyfus automatic investment services made available to the fund on your account application or service application. See Services for Fund Investors. In Person. Visit a Dreyfus Financial Center. Please call us for locations. The minimum initial and subsequent investment for regular accounts is $25,000 and $1,000, respectively. The minimum initial and subsequent investment for IRA accounts is $5,000 and $1,000, respectively. Investments made through Dreyfus TeleTransfer are subject to a $150,000 maximum per day. All investments must be in U.S. dollars. Third party checks, cash, travelers checks or money orders will not be accepted. You may be charged a fee for any check that does not clear. How to Sell Shares You may sell (redeem) shares at any time. Your shares will be sold at the next NAV calculated after your order is received in proper form by the fund s transfer agent or other authorized entity. Any certificates representing fund shares being sold must be returned with your redemption request. Your order will be processed promptly and you will generally receive the proceeds within a week. Before selling or writing a check against shares recently purchased by check, Dreyfus TeleTransfer or Automatic Asset Builder, please note that: if you send a written request to sell such shares, the fund may delay selling the shares for up to eight business days following the purchase of those shares the fund will not honor redemption checks, or process wire, telephone, online or Dreyfus TeleTransfer redemption requests, for up to eight business days following the purchase of those shares By Mail Regular Account. To redeem shares in a regular account by mail, send a letter of instruction that includes your name, your account number, the name of the fund, the dollar amount to be redeemed and how and where to send the proceeds. Mail your request to: The Dreyfus Family of Funds P.O. Box Boston, MA By Mail -- IRA Accounts. To redeem shares in an IRA account by mail, send a letter of instruction that includes all of the same information for regular accounts and indicate whether the distribution is qualified or premature and whether the 10% TEFRA should be withheld. Mail your request to: The Bank of New York Mellon, Custodian P.O. Box Boston, MA A signature guarantee is required for some written sell orders. These include: amounts of $10,000 or more on accounts whose address has been changed within the last 30 days requests to send the proceeds to a different payee or address amounts of $100,000 or more A signature guarantee helps protect against fraud. You can obtain one from most banks or securities dealers, but not from a notary public. For joint accounts, each signature must be guaranteed. Please call to ensure that your signature guarantee will be processed correctly. 14

18 Telephone or Online. To sell shares in a regular account, call Dreyfus at (outside the U.S ) or visit to request your transaction. A check will be mailed to your address of record or you may request a wire or electronic check (Dreyfus TeleTransfer). For wires or Dreyfus TeleTransfer, be sure that the fund has your bank account information on file. Proceeds will be wired or sent by electronic check to your bank account. You may request that redemption proceeds be paid by check and mailed to your address of record (maximum $250,000 per day). You may request that redemption proceeds (minimum $1,000) be sent to your bank by wire (minimum $5,000/maximum $20,000 per day) or by Dreyfus TeleTransfer (minimum $1,000/maximum $20,000 per day). Holders of jointly registered fund or bank accounts may redeem by wire or through Dreyfus TeleTransfer up to $500,000 within any 30-day period. Automatically. You may sell shares in a regular account by calling (outside the U.S ) for instructions to establish the Dreyfus Automatic Withdrawal Plan. You may sell shares in an IRA account by calling the above number for instructions on the Systematic Withdrawal Plan. In Person. Visit a Dreyfus Financial Center. Please call us for locations. General Policies Unless you decline teleservice privileges on your application, the fund s transfer agent is authorized to act on telephone or online instructions from any person representing himself or herself to be you and reasonably believed by the transfer agent to be genuine. You may be responsible for any fraudulent telephone or online order as long as the fund s transfer agent takes reasonable measures to confirm that instructions are genuine. If you invest through a financial intermediary (rather than directly with the distributor), the policies and fees may be different than those described herein. Banks, brokers, 401(k) plans, financial advisers and financial supermarkets may charge transaction fees and may set different minimum investments or limitations on buying or selling shares. Please consult your financial representative or the SAI. Money market funds generally are used by investors for short-term investments, often in place of bank checking or savings accounts, or for cash management purposes. Investors value the ability to add and withdraw their funds quickly, without restriction. For this reason, although Dreyfus discourages excessive trading and other abusive trading practices, the fund has not adopted policies and procedures, or imposed redemption fees or other restrictions such as minimum holding periods, to deter frequent purchases and redemptions of fund shares. Dreyfus believes that money market funds, such as the fund, are not targets of abusive trading practices because money market funds seek to maintain a $1.00 per share price and typically do not fluctuate in value based on market prices. However, frequent purchases and redemptions of the fund s shares could increase the fund s transaction costs, such as market spreads and custodial fees, and may interfere with the efficient management of the fund s portfolio, which could detract from the fund s performance. Accordingly, the fund reserves the right to refuse any purchase or exchange request. Funds in the Dreyfus Family of Funds that are not money market mutual funds have approved polices and procedures that are intended to discourage and prevent abusive trading practices in those mutual funds, which may apply to exchanges from or into a fund. If you plan to exchange your fund shares for shares of another Dreyfus fund, please read the prospectus of that other Dreyfus fund for more information. The fund also reserves the right to: refuse any purchase or exchange request change or discontinue its exchange privilege, or temporarily suspend the privilege during unusual market conditions 15

19 change its minimum or maximum investment amounts delay sending out redemption proceeds for up to seven days (generally applies only during unusual market conditions or in cases of very large redemptions or excessive trading) redeem in kind, or make payments in securities rather than cash, if the amount redeemed is large enough to affect fund operations (for example, if it exceeds 1% of the fund s assets) Under certain circumstances, fund management may authorize the processing of purchase and sale orders and the calculation of net asset values on days that the fund's primary trading markets are open. 16

20 DISTRIBUTIONS AND TAXES The fund earns dividends, interest and other income from its investments, and distributes this income (less expenses) to shareholders as dividends. The fund also realizes capital gains from its investments, and distributes these gains (less any losses) to shareholders as capital gain distributions. The fund normally pays dividends once a month and capital gain distributions, if any, annually. Fund dividends and capital gain distributions will be reinvested in the fund unless you instruct the fund otherwise. There are no fees or sales charges on reinvestments. Distributions paid by the fund are subject to federal income tax, and may also be subject to state or local taxes (unless you are investing through a tax-advantaged retirement account). For federal tax purposes, in general, certain fund distributions, including distributions of short-term capital gains, are taxable to you as ordinary income. The tax status of any distribution generally is the same regardless of how long you have been in the fund and whether you reinvest your distributions or take them in cash. If you buy shares of a fund when the fund has realized but not yet distributed income or capital gains, you will be buying a dividend by paying the full price for the shares and then receiving a portion back in the form of a taxable distribution. Your sale of shares, including exchanges into other funds, may result in a capital gain or loss for tax purposes. A capital gain or loss on your investment in the fund generally is the difference between the cost of your shares and the amount you receive when you sell them. The tax status of your distributions will be detailed in your annual tax statement from the fund. Because everyone s tax situation is unique, please consult your tax adviser before investing. 17

21 SERVICES FOR FUND INVESTORS Dreyfus Dividend Sweep For automatically reinvesting the dividends and distributions from one Dreyfus fund into another, use Dreyfus Dividend Sweep (not available for IRAs). You can set up this service with your application or by calling Checkwriting privilege You may write redemption checks against your account in amounts of $1,000 or more. There is a $2.00 charge for each check written, unless you meet the $50,000 minimum balance requirement at the time of the transaction. The charge is retained by the fund. An additional fee will be charged by the transfer agent if you request a stop payment or if the transfer agent cannot honor a redemption check due to insufficient funds or another valid reason. Please do not postdate your checks or use them to close your account. Exchange privilege You can exchange shares worth $1,000 or more from one Dreyfus fund into another. You are allowed only four exchanges out of the fund in a calendar year. You can request your exchange in writing, by phone or online. Be sure to read the current prospectus for any fund into which you are exchanging before investing. Any new account established through an exchange will have the same privileges as your original account (as long as they are available). There is a $5.00 exchange fee, unless you meet the $50,000 minimum balance requirement at the time of the transaction. The charge is retained by the fund. You may be charged a sales load when exchanging into any fund that has one. Dreyfus TeleTransfer privilege To move money between your bank account and your Dreyfus fund account with a phone call or online, use the Dreyfus TeleTransfer privilege. You can set up Dreyfus TeleTransfer on your account by providing bank account information and following the instructions on your application. For accounts with a balance below $50,000, there is a $5.00 fee for Dreyfus TeleTransfer redemptions. The charge is retained by the fund. Shares held in an IRA or Education Savings Account may not be redeemed through the Dreyfus Teletransfer privilege. 18

22 Dreyfus Express voice-activated account access You can easily manage your Dreyfus accounts, check your account balances, purchase fund shares, transfer money between your Dreyfus funds, get price and yield information and much more when it s convenient for you by calling Certain requests may require the services of a representative. Account Statements Every Dreyfus fund investor automatically receives regular account statements. You will also be sent a yearly statement detailing the tax characteristics of any dividends and distributions you have received. Dreyfus Financial Centers Dreyfus offers a full array of investment services and products through Dreyfus Financial Centers. This includes information on mutual funds, brokerage services, tax-advantaged products and retirement planning. Experienced financial consultants can help you make informed choices and provide you with personalized attention in handling account transactions. The Financial Centers also offer informative seminars and events. To find out whether a Dreyfus Financial Center is near you, call

23 FINANCIAL HIGHLIGHTS These financial highlights describe the performance of the fund s shares for the fiscal periods indicated. Total return shows how much your investment in the fund would have increased (or decreased) during each period, assuming you had reinvested all dividends and distributions. These financial highlights have been audited by Ernst & Young LLP, an independent registered public accounting firm, whose report, along with the fund s financial statements, is included in the annual report, which is available upon request. Year Ended February 28/29, Dreyfus BASIC Money Market Fund, Inc Per Share Data ($): Net asset value, beginning of period Investment Operations: Investment income--net Distributions: Dividends from investment income--net (.001) (.022) (.047) (.048) (.031) Net asset value, end of period Total Return (%).13 a Ratios/Supplemental Data (%): Ratio of total expenses to average net assets Ratio of net expenses to average net assets Ratio of net investment income to average net assets Net Assets, end of period ($ x 1,000) 870,134 1,157,403 1,246,850 1,066, ,708 a On September 9, 2009, BNY Mellon made a payment to the fund of $35,598,634 pursuant to a Capital Support Agreement, which was then terminated. If such payment pursuant to the Capital Support Agreement had not been made, total return would have been (3.87)%. Year Ended February 28/29, Dreyfus BASIC U.S. Government Money Market Fund Per Share Data ($): Net asset value, beginning of period Investment Operations: Investment income--net.000 a Distributions: Dividends from investment income--net (.000) a (.016) (.045) (.047) (.031) Net asset value, end of period Total Return (%) Ratios/Supplemental Data (%): Ratio of total expenses to average net assets Ratio of net expenses to average net assets Ratio of net investment income to average net assets Net Assets, end of period ($ x 1,000) 246, , , , ,315 a Amount represents less than $.001 per share. 20

24 For More Information Dreyfus BASIC Money Market Fund, Inc. SEC file number: Dreyfus BASIC U.S. Government Money Market Fund SEC file number: More information on each fund is available free upon request, including the following: Annual/Semiannual Report Describes each fund s performance, lists portfolio holdings and contains a letter from the fund s manager discussing recent market conditions, economic trends and fund strategies that significantly affected the fund s performance during the last fiscal year.the fund s most recent annual and semiannual reports are available at Statement of Additional Information (SAI) Provides more details about a fund and its policies. A current SAI is available at and is on file with the Securities and Exchange Commission (SEC). The SAI is incorporated by reference (is legally considered part of this prospectus). Portfolio Holdings Dreyfus funds generally disclose their complete schedule of portfolio holdings monthly with a 30-day lag at under Mutual Fund Center Dreyfus Mutual Funds Mutual Fund Total Holdings. Complete holdings as of the end of the calendar quarter are disclosed 15 days after the end of such quarter. Dreyfus money market funds generally disclose their complete schedule of holdings daily. The schedule of holdings for a fund will remain on the website until the fund files its Form N-Q or Form N-CSR for the period that includes the dates of the posted holdings. A complete description of the funds policies and procedures with respect to the disclosure of the funds portfolio securities is available in the funds SAI. To obtain information: By telephone Call By mail Write to: The Dreyfus Family of Funds 144 Glenn Curtiss Boulevard Uniondale, NY By Send your request to info@dreyfus.com On the Internet Certain fund documents can be viewed online or downloaded from: SEC Dreyfus You can also obtain copies, after paying a duplicating fee, by visiting the SEC s Public Reference Room in Washington, DC (for information, call ) or by request to publicinfo@sec.gov, or by writing to the SEC s Public Reference Section, Washington, DC MBSC Securities Corporation P0710